config file $ORACLE_HOME/network/admin/cman.orayou can get template from $ORACLE_HOME/network/admin/samples/cman.ora and find log: $ORACLE_HOME/network/log/cman_nisco_li_alert.log Example:cman_abc.cn.ibm.com=(configuration= (address=(protocol=tcp)(host=abc.cn.ibm.com)(port=1630)) (rule_list= (rule= (src=*)(dst=*)(srv=*)(act=accept) (action_list=(aut=off)(moct=0)(mct=0)(mit=0)(conn_stats=on)) ) (rule= (src=abc)(dst=127.0.0.1)(srv=cmon)(act=accept) ) ))Note:1. address: please set oracle server's hostname and port number for CMAN, default is 1630.2. rule_list and parameter_list: these are some connection rules and parameters, you can get detail info from samples $ORACLE_HOME/network/admin/samples/cman.ora.3) Run CMAN using cmctl[oracle@abc bin]$ cmctlCMCTL for Linux: Version 11.1.0.6.0 - Production on 04-FEB-2013 13:38:38Copyright (c) 1996, 2007, Oracle. All rights reserved.Welcome to CMCTL, type "help" for information.CMCTL> help The following operations are availableAn asterisk (*) denotes a modifier or extended command: